package com.young.coderule.common.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;

/**
 * @DESCRIPTION: springContext工具，用来从容器获取bean
 * @USER: Young
 */
public class SpringContextUtil {

        private static ApplicationContext applicationContext;


        public static void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
            if(SpringContextUtil.applicationContext == null) {
                SpringContextUtil.applicationContext = applicationContext;
            }
        }

        //获取applicationContext
        public static ApplicationContext getApplicationContext() {
            return applicationContext;
        }

        //通过name获取 Bean.
        public static Object getBean(String name){
            return getApplicationContext().getBean(name);
        }

        //通过class获取Bean.
        public static <T> T getBean(Class<T> clazz){
            return getApplicationContext().getBean(clazz);
        }

        //通过name,以及Clazz返回指定的Bean
        public static <T> T getBean(String name,Class<T> clazz){
            return getApplicationContext().getBean(name, clazz);
        }

}
